Interfacial reaction between Ag and NdBa2Cu3O7- δ superconductor prepared by low-temperature process

Shinobu Fujihara, Gohki Murakami, Toshio Kimura, Yoshio Masuda

Research output: Contribution to journalArticle

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Abstract

The interfacial reaction between Ag and NdBa2Cu3O7-δ (Nd123) was examined from the viewpoint of low-temperature processing of superconducting materials. The incongruent melting temperature of an Nd123 sample was measured to be as low as 960°C in N2. Addition of 10 mass% of Ag to Nd123 decreased further the incongruent melting temperature of Nd123 to 920°C. By a model experiment using an Ag pellet embedded in Nd123, it was revealed that an Ag-dissolved (Ba,Cu)-rich phase was formed near the interface with Ag. Based upon these results, Ag-added Nd123 ceramic samples were prepared by the partial melting process at temperatures below the melting point of Ag, 960°C. Superconducting properties of the ceramic samples were improved by the addition of Ag.

Original languageEnglish
Pages (from-to)1551-1554
Number of pages4
JournalJournal of the European Ceramic Society
Volume19
Issue number6-7
Publication statusPublished - 1999 Jun

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Surface chemistry
Superconducting materials
Melting point
Temperature
Melting
Processing
Experiments

Keywords

  • Composites
  • Interfaces
  • Oxide superconductors.
  • Superconductivity

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Interfacial reaction between Ag and NdBa2Cu3O7- δ superconductor prepared by low-temperature process. / Fujihara, Shinobu; Murakami, Gohki; Kimura, Toshio; Masuda, Yoshio.

In: Journal of the European Ceramic Society, Vol. 19, No. 6-7, 06.1999, p. 1551-1554.

Research output: Contribution to journalArticle

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